Overview Reviews Product Description Ground HSS or cobalt Cobalt provides better wear & heat resistance than HSS High speed steel (HSS) provides good wear resistance and can be used in general purpose applications for both ferrous and nonferrous materials. Clarkson Osborn Catalog Product Videos Custom Field Size 1 x 6" Material HSS Package quantity/sold as each 1 Product Reviews Write a Review Write a Review × Clarkson-Osborn 1 x 6" HSS Ground Tool Steel Bit TO02966 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *